Home / 6,983.76-10,478.88-4,385.28

Finding the Fourth Proportional to 6,983.76, 10,478.88 and 4,385.28

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Solution

The fourth proportional to 6,983.76, 10,478.88 and 4,385.28 is: 6,579.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,983.76 : 10,478.88 = 4,385.28 : x
  2. Step 2: Convert to fraction form
    6,983.76/10,478.88 = 4,385.28/x
  3. Step 3: Cross multiply
    6,983.76x = 10,478.88 × 4,385.28
  4. Step 4: Simplify right side
    6,983.76x = 45,952,822.89
  5. Step 5: Solve for x
    x = 45,952,822.89/6,983.76
  6. Step 6: Final answer
    x = 6,579.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.